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JOHN MAGEE. OF CHELSEA, MASSACHUSETTS, ASSIGNO-RTO THE'MAGEE i FURNACE, COMPANY.

Letters Patent No. 78,217, dated .May 26, 1868.

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TO ALL WHOM IT MAY CONCERN: I

Be'it known that I, JOHN MAGEE; of Chelsea, in the county ot'Snlfolk, and State of Massachusetts, have invented certainImprovements in Cooking-Stoves, of which the-following is a i'ull, clear, and exact description, reference being bad to tbe'accompanying drawings, making part oflthis specification, in which- Figure 1 is a perspective view of a cooking-stove with my improvements applied thereto.

Figure 2 is a longitudinal vertical section through themntre'of the-same Figure 3 is a transverse vertical section on the line a: :e of fig. 2. I

Figure 4 is a horizontal section on the line y 3 of fig. 2, a'portion of 'oneof theparts being broken away to better illustrate my improved flue. I I p Figure 5 is a plan of the bottom of a cooking-stove having my improved fine applied thereto.-

My present invention is briefly referred to in two other applications for'Letters Patent of the United vStates, made by me simultaneously with this; and my invention consists in an auxiliary flue placed at the bottom of the stove, underneath the return flue ofthc oven, the ofiice of the said au'xiliaryflhe being to collect'and economize the heat which radiates from the bottom of stoves'of'theordinary construction, and to create a current of air forconducting said eeonomized heat into the oven, by which construction'I am enabled to increase the volume of hot air to intensify the heat of and ventilate the oven,.and also to supply air for the consumption of the gases arising from the fuel in the fire-box. V p h To enable others skilled in the art tounderstand and use myiriventiomul will proceedto describe the manner in which I have carried it out. I I i i i p V i In the said drawings, A represents the top-plate of howling-stone B is the lire-box, provided with a swinging grate, a, at itsbottom, and a stationary or removablegrate, b, atits front. 0 is aroasting-closet, placedin front of the grate which is open, to allow the directsrays of heat to be'conveyedtherein. This roasting closet C is provided with a swinging lid, D, and base. warming-closet, E, placed directly under it, the top of the'warming-closet occupying the same position as that of the hearth in au ordinary high-hearth stove.

F is a lid, hinged or'otherwise secured,--or'made removable, and form's the -b6ttom of the warmingscloseh The'details of the construction of bot'h the roasting andwarming clos-ets being fully set forth in one or both of separate applications made simnltaneouslytyith this, a repetitio'n thereofis deemed unnecessary here.

I is the oven, J its direct flue, and K its return flue, the bottom of which forms the bottom proper of the" stove as ordinarily construct-ed. L is an auxiliary flue or chamber formed betweentwo plates, 0 d, placed below. the b'ottom of the ordinary stove, uuderneath'the-return flue K, the lower plate at being provided with a series of perforations, e, or openings, to admit the air of the apartment, which then unites with and conducts the heat which radiates from the bottom of the return fiuc 'upon' the upper plate 0, into the chamber or auxiliary flue in The volume of hot air thus increased is then conducted by two upright tubes or pipes M'into a trunk or chamber, N, extendingtransversely across the bottomofthe back corner of the-oven I, and thence through perfora tions f into and across the oven, and through perforations g-h: formed" in the bottom and top of another trunk or chamber 0, at which point thecurhent-ofair impinges-upon the-tapingthe"igni'ted fuel in the fire-box, and consumes the gases arising therefrom. i v i To provide against the possibility of any heat passing. down throughthe bottomplated of the auxiliary flue L, I cover the upper side'of the said ,plate with a layer of cement, plaster of Paris, or other non-conducting material,

7 By the construction above described, the heat which would othetwlseebe radiated fromthe bottom of the stove and escape into the apartment, is now, not only utilized; in affording additional heat to the oven, but servesto perfectly ventilate the same, and also supplies a current of air necessarv for the consumption of the gases in Either one or both the trunks or'chainb'ers N 0 may be dispensediwith, and the air from the auxiliary fluehe introduceiby oneor mer'e-ztubeaon-other cb'nductors directly through e single perfo r' te'd plate at; the (app 7 and bottofn corners, or at the top corner only, of the oven, wifihout departing fromtlie spirit of .iny invention;

v What I claim as my ififiention, and desil e to sec'uxe By Letters Patent, "is- The auxiliapy flue placed below the bottp'm of'tjle 'ret urpiflue'K, and provided with suitable perforations or openings, 0, in combination with one or more tubes or conductors M; and one or more perforated trunks'N O,

perforated plates; sulietantially as end for the purpose described. I

' JOHN MAGEE.

Witnesses:

N. W. STEARNS, W. CAMBRIDGE- 

